This geometry shape is drawn using the 3D line tool. It is mainly used for outlining areas.
Select a class
Move along the line or edge and place points where you want to have control points.
The points will be placed at the lowest point in the point cloud at that location.
Continue placing points until you feel done with the object.
Select a class
Shift+click on a prelabel to apply the selected class
Use the 3D Transformation controls to adjust the placement of the line point. To change the entire line, press shift before moving the controls.
You can extend a line from the start or end with keyboard shortcuts. Press 0 to extend the line from the end or shift+0 to extend the line from the beginning.
Zoom to selected to quickly review the points along a line by pressing k.
You can select projected 3D line points in the 2D miniature image.
Step between points using alt+nand alt+p.
You can reverse the line direction by clicking on the 3D lane with the right mouse button and selecting "Reverse direction." See Direction indicator for how to view lane direction indicators.
You can add a custom shortcut to reverse the direction of the selected 3D line. See The keybindings window for how to add a custom keybinding.
3D Lines can be configured to automatically be closed. This way the last node will always connect to the first and is visualized while drawing.
The Derived classes feature is a way to automatically generate 3D lines based on other lines, such as lane connections and centerlines.
Node and shape edit modes shares insights on how to transform one node or the entire shape at a time.
Find out how you canMulti-edit nodes on 3D Lines and Lanes, allowing you to adjust or remove the nodes.